CVE-2026-68422 (GCVE-0-2026-68422)
Vulnerability from cvelistv5 – Published: 2026-08-10 12:04 – Updated: 2026-08-19 16:35
VLAI
EPSS
VEX
Title
btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots()
Summary
In the Linux kernel, the following vulnerability has been resolved:
btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots()
If we have an unexpected reloc_root for our root, we jump to the out label
but never drop the reference we obtained for root, resulting in a leak.
Add a missing btrfs_put_root() call.
Severity
No CVSS data available.
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
24213fa46c7080c31d79aa2e3e2f0d9480cab700 , < f89df93e8aefa4c1c813f835559f2ac727f79766
(git)
Affected: 24213fa46c7080c31d79aa2e3e2f0d9480cab700 , < 3f586b4c92e4272fcd01bf0db0590b63acf3e85b (git) Affected: 24213fa46c7080c31d79aa2e3e2f0d9480cab700 , < b3d39b03799600c76c33486e2d29b73a771023db (git) Affected: 24213fa46c7080c31d79aa2e3e2f0d9480cab700 , < 72f673d1c1deb819554d3e7e154f6d84301eb735 (git) Affected: 24213fa46c7080c31d79aa2e3e2f0d9480cab700 , < 60a23d4ea169e27403f3bb023bb98036797c0206 (git) Affected: 24213fa46c7080c31d79aa2e3e2f0d9480cab700 , < 7591d1727067d6063247901ad25c4bdc4e5695c4 (git) Affected: 24213fa46c7080c31d79aa2e3e2f0d9480cab700 , < ce6050bafb4e33377dc17fcc357736bfc351180c (git) |
|
| Linux | Linux |
Affected:
5.13
Unaffected: 0 , < 5.13 (semver) Unaffected: 5.15.216 , ≤ 5.15.* (semver) Unaffected: 6.1.183 , ≤ 6.1.* (semver) Unaffected: 6.6.148 , ≤ 6.6.* (semver) Unaffected: 6.12.101 , ≤ 6.12.* (semver) Unaffected: 6.18.42 , ≤ 6.18.* (semver) Unaffected: 7.1.6 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix) |
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}
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"providerMetadata": {
"dateUpdated": "2026-08-19T16:35:17.540Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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},
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},
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"url": "https://git.kernel.org/stable/c/7591d1727067d6063247901ad25c4bdc4e5695c4"
},
{
"url": "https://git.kernel.org/stable/c/ce6050bafb4e33377dc17fcc357736bfc351180c"
}
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"title": "btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots()",
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"metrics": {},
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"id": "CVE-2026-68422",
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"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68422.json",
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"cve": "CVE-2026-68422",
"id": "CVE-2026-68422",
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"title": "SUSE CVE CVE-2026-68422",
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
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